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Finding the Fourth Proportional to 326,149.80, 489,391.69 and 148,633.98

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Solution

The fourth proportional to 326,149.80, 489,391.69 and 148,633.98 is: 223,027.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,149.80 : 489,391.69 = 148,633.98 : x
  2. Step 2: Convert to fraction form
    326,149.80/489,391.69 = 148,633.98/x
  3. Step 3: Cross multiply
    326,149.80x = 489,391.69 × 148,633.98
  4. Step 4: Simplify right side
    326,149.80x = 72,740,234,663.63
  5. Step 5: Solve for x
    x = 72,740,234,663.63/326,149.80
  6. Step 6: Final answer
    x = 223,027.07

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.